Athletics at the 2018 Commonwealth Games – Women's 400 metres
The women's 400 metres at the 2018 Commonwealth Games, as part of the athletics programme, took place in the Carrara Stadium between 9 and 11 April 2018.Records
Prior to this competition, the existing world and Games records were as follows:
Schedule
The schedule was as follows:
All times are Australian Eastern Standard TimeResults
First round
The first round consisted of five heats. The four fastest competitors per heat advanced to the semifinals.
;Heat 1
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 2 | | 0.163 | 51.20 | | |
| 2 | 5 | | 0.166 | 51.37 | | |
| 3 | 1 | | 0.167 | 52.26 | | |
| 4 | 4 | | 0.145 | 52.40 | | |
| 5 | 3 | | 0.175 | 53.72 | | |
| 6 | 6 | | 0.248 | 55.26 | | |
| 7 | 7 | | 0.140 | 58.43 | | |
| 8 | | | | | |
;Heat 2
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 5 | | 0.138 | 50.80 | | |
| 2 | 8 | | 0.157 | 52.07 | | |
| 3 | 7 | | 0.142 | 52.44 | | |
| 4 | 6 | | 0.231 | 52.79 | | |
| 5 | 4 | | 0.169 | 53.13 | | |
| 6 | 2 | | 0.200 | 53.41 | | |
| 3 | | 0.261 | | | |
;Heat 3
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 3 | | 0.190 | 51.74 | | |
| 2 | 4 | | 0.204 | 52.58 | | |
| 3 | 2 | | 0.217 | 52.90 | | |
| 4 | 5 | | 0.197 | 53.34 | | |
| 5 | 8 | | 0.241 | 54.02 | | |
| 6 | 6 | | | 55.62 | | |
| 7 | 1 | | 0.171 | 57.12 | | |
| 8 | 7 | | 0.160 | 1:00.72 | | |
;Heat 4
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 8 | | 0.149 | 52.32 | | |
| 2 | 3 | | 0.218 | 53.28 | | |
| 3 | 1 | | 0.188 | 53.45 | | |
| 4 | 4 | | 0.201 | 54.10 | | |
| 5 | 5 | | 0.267 | 56.66 | | |
| 6 | 7 | | 0.262 | 57.45 | | |
| 7 | 2 | | 0.183 | 58.62 | | |
| 6 | | 0.206 | | | |
;Heat 5
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 4 | | 0.198 | 51.71 | | |
| 2 | 2 | | 0.211 | 51.73 | | |
| 3 | 6 | | 0.165 | 52.11 | | |
| 4 | 5 | | 0.179 | 52.70 | | |
| 5 | 1 | | 0.153 | 52.81 | | |
| 6 | 3 | | 0.191 | 53.63 | | |
| 7 | 8 | | 0.188 | 54.65 | | |
| 8 | 7 | | 0.313 | 58.31 | | |
Semifinals
Three semi-finals were held. The two fastest competitors per semi advanced to the final.
;Semifinal 1
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 5 | | 0.175 | 51.08 | | |
| 2 | 3 | | 0.174 | 51.26 | | |
| 3 | 6 | | 0.157 | 51.53 | | |
| 4 | 4 | | 0.152 | 52.06 | | |
| 5 | 7 | | 0.227 | 52.38 | | |
| 6 | 2 | | 0.166 | 54.10 | = | |
| 7 | 1 | | 0.151 | 54.35 | | |
| 8 | 8 | | 0.182 | 54.85 | | |
;Semifinal 2
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 3 | | 0.212 | 51.52 | | |
| 2 | 5 | | 0.217 | 51.81 | | |
| 3 | 2 | | 0.139 | 52.65 | | |
| 4 | 1 | | 0.153 | 52.73 | | |
| 5 | 8 | | 0.174 | 53.00 | | |
| 6 | 4 | | 0.202 | 54.27 | | |
| 7 | 7 | | 0.153 | 54.36 | | |
| 6 | | | | | |
;Semifinal 3
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 5 | | 0.140 | 51.21 | | |
| 2 | 6 | | 0.210 | 51.41 | | |
| 3 | 4 | | 0.142 | 51.51 | | |
| 4 | 3 | | 0.161 | 52.02 | | |
| 5 | 7 | | 0.161 | 53.16 | | |
| 6 | 1 | | 0.157 | 53.80 | | |
| 7 | 2 | | 0.219 | 54.40 | | |
| 8 | 8 | | 0.247 | 54.50 | | |
Final
The medals were determined in the final.
| Rank | Lane | Name | Reaction Time | Result | Notes |
| 6 | | 0.222 | 50.15 | |
| 3 | | 0.159 | 50.57 | |
| 5 | | 0.137 | 50.93 | |
| 4 | 8 | | 0.222 | 51.17 | |
| 5 | 4 | | 0.207 | 51.32 | |
| 6 | 1 | | 0.154 | 51.32 | |
| 7 | 2 | | 0.165 | 52.03 | |
| 8 | 7 | | 0.233 | 52.26 | |
